Also on Thursday, a sixth-seeded Raonic was leading Viktor Troicki 3-0 in the
opening set when the Serb retired, the eighth-seeded heavy crowd favorite
Nishikori got past Spanish veteran Tommy Robredo 5-7, 6-1, 6-0, and Russian
qualifier Dmitry Tursunov took out Japanese wild card Tatsuma Ito 7-5, 6-3
following a rain delay. Tursunov will meet Baghdatis on Friday.

One other quarterfinal will pit top-seeded and defending champion Andy Murray
against seventh-seeded Swiss Stanislas Wawrinka. The U.S. Open titlist and
Olympic gold medalist Murray beat 2010 champ Rafael Nadal in last year's Tokyo
finale.